September weather forecastYtterbyn, Sweden
September
Weather in September
September, the first month of the autumn in Ytterbyn, is also a fresh month, with an average temperature ranging between min 7.9°C (46.2°F) and max 12.3°C (54.1°F).Temperature
The start of September comes with a small reduction in the average high-temperature, subtly receding from an enjoyable 16.8°C (62.2°F) in August to a fresh 12.3°C (54.1°F). During September, Ytterbyn perceives a slight decrease in temperature from daytime highs, settling at an average low of 7.9°C (46.2°F).Humidity
The average relative humidity in September is 81%.Rainfall
In Ytterbyn, during September, the rain falls for 13.8 days and regularly aggregates up to 44mm (1.73") of precipitation. In Ytterbyn, Sweden, during the entire year, the rain falls for 117.7 days and collects up to 437mm (17.2") of precipitation.Snowfall
January through June, September through December are months with snowfall in Ytterbyn. September is the first month it typically snows in Ytterbyn, Sweden. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. In Ytterbyn, during the entire year, snow falls for 96.5 days and aggregates up to 1080mm (42.52") of snow.Daylight
The average length of the day in September in Ytterbyn is 13h and 6min.On the first day of the month, sunrise is at 05:05 and sunset at 19:49. On the last day of September, sunrise is at 06:36 and sunset at 17:58 CEST.
Sunshine
In Ytterbyn, Sweden, the average sunshine in September is 7.2h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, an average UV index of 3 transforms into the following instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ytterbyn, Sweden
- Average high temperature in September: 12.3°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (-6.3°C).
- Average low temperature in September: 7.9°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is February (-11.1°C).
Average pressure in September
Ytterbyn, Sweden
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1004.8mbar).
Average wind speed in September
Ytterbyn, Sweden
- Average wind speed in September: 15km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is April (12.2km/h).
Average humidity in September
Ytterbyn, Sweden
- Average humidity in September: 81%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is June (68%).
Average rainfall in September
Ytterbyn, Sweden
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Ytterbyn, Sweden
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Ytterbyn, Sweden
- Average snowfall in September: 1mm
The month with the highest snowfall is March (231mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Ytterbyn, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (17.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Ytterbyn, Sweden
- Average daylight in September: 13h and 6min
The month with the longest days is July (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 3h and 18min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Ytterbyn, Sweden
- Average sunshine days in September: 14 days
The months with the most sunshine days are June and August (16.3 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in September
Ytterbyn, Sweden
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in September
Ytterbyn, Sweden
- Average cloud cover in September: 50
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Ytterbyn, Sweden
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March and April (7km).
